Title:
REFRIGERATION CYCLE APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/244192
Kind Code:
A1
Abstract:
A refrigeration cycle apparatus (100) is provided with: a compressor (1) for compressing a refrigerant; an oil separator (2) for separating a refrigerating machine oil from the refrigerant discharged from the compressor (1); an oil feeding path (24) for feeding the refrigerating machine oil separated by the oil separator (7) to the compressor (1); an oil cooler (7) for cooling the refrigerating machine oil to be fed to the compressor (1); a cooling medium path (22) for feeding a cooling medium to the oil cooler (7); a temperature regulator (9) for regulating the temperature of the refrigerating machine oil to be fed to the compressor (1); at least one sensor (15); and a control device (70). The control device (70) controls the temperature regulator on the basis of the detection value of a physical quantity which is detected by the sensor (15) and which changes depending on the temperature of the refrigerating machine oil to be fed to the compressor (1), determines the load state of the compressor (1) on the basis of the detection value of the physical quantity which is detected by the sensor (15) and which is for use in determining the load state of the compressor (1), and, when the load state of the compressor (1) is determined as being an overload state, performs first control for inhibiting increase of operation capacity of the compressor (1) and second control for inhibiting decrease of regulation capacity of the temperature regulator (3).
Inventors:
MATSUO MITSUAKI (JP)
ISHIHARA NOBUYA (JP)
YASHIRO TAKANORI (JP)
ISHIHARA NOBUYA (JP)
YASHIRO TAKANORI (JP)
Application Number:
PCT/JP2021/019175
Publication Date:
November 24, 2022
Filing Date:
May 20, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Domestic Patent References:
| WO2016117037A1 | 2016-07-28 |
Foreign References:
| JP2017141970A | 2017-08-17 | |||
| JP2005337242A | 2005-12-08 | |||
| JP2005188848A | 2005-07-14 | |||
| JP2011075258A | 2011-04-14 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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